ADD file via upload

MyFrame.java

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+package flowershop.view;
+
+import java.awt.Toolkit;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+import javax.swing.JFrame;
+
+public class MyFrame extends JFrame {
+    //获得屏幕的宽度
+	private double ScreenWidth = Toolkit.getDefaultToolkit().getScreenSize().getWidth();
+	  //获得屏幕的高度
+	private double ScreenHeigth = Toolkit.getDefaultToolkit().getScreenSize().getHeight();
+	
+	public MyFrame(String title,int width,int heigth) {
+		super(title);
+		
+		//设置窗口大小
+		setSize(width,heigth);
+		//计算窗口居中的坐标
+		int x = (int)(ScreenWidth - width) / 2;
+		int y = (int)(ScreenHeigth - heigth) / 2;
+		//设置窗口的位置
+		setLocation(x,y);
+		
+		//注册窗口事件
+		addWindowListener(new WindowAdapter(){
+
+			@Override
+			public void windowClosing(WindowEvent e) {
+				// 退出系统
+				System.exit(0);
+			}
+			
+		});
+	}
+}